Method of removing hydrous silica from bentonite
US10364155B2 · kind B2 · utility
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14Claims
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Key dates
| Filing date | Dec 29, 2015 |
| Grant date | Jul 30, 2019 |
| Priority date | — |
| Expiry date | Aug 29, 2037 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC01B33/40
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A method of removing hydrous silica from bentonite includes irradiating an ultrasonic wave after preparing slurry by putting the bentonite and a sodium compound into distilled water or deionized water, adding the distilled water or the deionized water to the slurry, into which the ultrasonic wave is irradiated, to dilute and centrifugate the slurry, and drying a supernatant obtained through the centrifugation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.